export declare const SESSION_MODE: {
    readonly LOCKED: "locked";
};
export type SessionMode = (typeof SESSION_MODE)[keyof typeof SESSION_MODE];
export type WidgetSessionConfig = {
    id?: string;
    mode?: SessionMode;
};
export declare const isSessionLocked: (session: WidgetSessionConfig | undefined) => boolean;
export declare const isKnownSessionMode: (mode: unknown) => mode is "locked";
export declare const lockedSessionId: (session: WidgetSessionConfig | undefined) => string | undefined;
export declare const SESSION_FOCUS: {
    readonly REQUEST_RESPONSE: "request-response";
    readonly RESPONSE_ONLY: "response-only";
    readonly REQUEST_ONLY: "request-only";
};
export type SessionFocus = (typeof SESSION_FOCUS)[keyof typeof SESSION_FOCUS];
/**
 * Which slice of the transcript shows, as a pair of indexes over its messages. Both ends are
 * inclusive and zero-based, and a negative index counts from the end — `-1` is the last message.
 * Mirrors Core's `SessionScopeRange`.
 */
export type SessionScopeRange = {
    from: number;
    to: number;
};
export type DeploymentSessionScope = {
    sessionId: string | null;
    mode: SessionMode | 'unlocked';
    focus: SessionFocus;
    messages: 'all' | SessionScopeRange;
    /** The owner opted into letting this embed name its own conversation. */
    allowClientSession: boolean;
};
export declare const readDeploymentSessionScope: (config: unknown) => DeploymentSessionScope | undefined;
/**
 * A lock is only meaningful alongside the conversation it pins. A scope that names no session
 * but claims `locked` would leave the widget with nothing to render and no composer to type in,
 * so it is treated as unlocked rather than bricking the mount.
 */
export declare const isDeploymentScopeLocked: (scope: DeploymentSessionScope | undefined) => boolean;